ODs Faktasider. Brønnbane / Leting. Generell informasjon. Brønnbane navn 16/1-7 EXPLORATION. Pressemelding Faktakart i nytt vindu.

Transkript

1 Generell informasjon Brønnbane navn 16/1-7 Type Formål Status Pressemelding Faktakart i nytt vindu Hovedområde Felt EXPLORATION WILDCAT P&A lenke lenke NORTH SEA IVAR AASEN Funn 16/1-7 Brønn navn 16/1-7 Seismisk lokalisering Boret i utvinningstillatelse Boreoperatør FS9402RE98 Survey - inline 2290 & crossline B Boretillatelse 1078-L Boreinnretning Bore dager 30 Esso Exploration and Production Norway A/S DEEPSEA DELTA Borestart Boreslutt Frigitt dato Publiseringsdato Opprinnelig formål Gjenåpnet Innhold Funnbrønnbane WILDCAT NO OIL YES 1. nivå med hydrokarboner, alder MIDDLE JURASSIC 1. nivå med hydrokarboner, formasjon Avstand, boredekk - midlere havflate Vanndybde ved midlere havflate SLEIPNER FM Totalt målt dybde (MD) [m RKB] Totalt vertikalt dybde (TVD) [m RKB] Maks inklinasjon [ ] 2.2 Temperatur ved bunn av brønnbanen [ C] Eldste penetrerte alder Eldste penetrerte formasjon LATE TRIASSIC SKAGERRAK FM Side 1 av 6

2 Geodetisk datum ED50 NS grader 58 55' 58.63'' N ØV grader 2 7' 42.36'' E NS UTM ØV UTM UTM sone 31 NPDID for brønnbanen 4928 Brønnhistorie General The primary objective of well 16/1-7 was to test the hydrocarbon potential of the West Cable prospect. The prospect was located on the eastern margin of the South Viking Graben southwest of the Utsira High in the North Sea, approximately 35 km southwest of the Balder Field. The main objective of the well was to test the hydrocarbon potential of the Sleipner Formation coastal plain sandstone reservoir of Callovian and Bathonian age. The hydrocarbon potential of the Late Jurassic Heather and Draupne Formations, and the Tertiary Lista and Våle Formations were considered as secondary objectives. The anticipated hydrocarbon type was light oil. Planned TD was 50 m into Triassic sediments. Operations and results Well 16/1-7 was spudded with the semi-submersible installation Deepsea Delta on 29 April 2004 and drilled to TD at 3186 m 103 m into in the Late Triassic Skagerrak Formation. No significant problems were reported from the operations. The well was drilled with seawater + high viscosity polymer sweeps down to 1286 m and with Versavert oil based mud from 1286 m to TD. No shallow gas was observed. A 73 m thick Heimdal Formation (Meile Member) was encountered at 2327 m. The Formation was water wet with no shows. No sands were developed in the Late Jurassic. The well discovered a 14.0 m (11.0 m net) oil bearing sand between and m (logging depth) in the Sleipner Formation. The RCI tool was used to take pressures and samples. The reservoir was normally pressured. Four 840 cc and two 4 litre samples were taken in the oil zone at 2965 m, m and two 840 cc samples were taken in the water zone at m, m. The interpreted Free Water Level was at m. No conventional coring was performed in the well. The well was permanently abandoned on 28 May 2004 as an oil Discovery. Testing The discovery was tested using RCI straddle packer assembly (also called mini drill stem tests) at 2975 m, m and m (logging depth). Borekaks i OD Borekaksprøve, topp dybde Borekaksprøve, bunn dybde Side 2 av 6

3 Borekaksprøve tilgjengelig YES Palynolgiske preparater i OD Prøve dybde Dybde enhet Prøve type Laboratorie DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI DC RRI SWC RRI SWC RRI SWC RRI DC RRI SWC RRI DC RRI DC RRI DC APT DC APT DC APT SWC RRI DC APT Side 3 av 6

4 DC APT DC APT DC APT SWC RRI DC APT DC APT DC RRI DC APT DC APT DC APT DC APT DC APT DC RRI DC APT DC APT DC APT DC RRI DC APT SWC RRI DC APT DC APT DC RRI Litostratigrafi Top depth Lithostrat. unit 141 NORDLAND GP 717 UTSIRA FM 847 HORDALAND GP 920 SKADE FM 1157 NO FORMAL NAME 1631 GRID FM 1723 NO FORMAL NAME 1782 GRID FM 1820 NO FORMAL NAME 1862 GRID FM 1922 NO FORMAL NAME 2130 ROGALAND GP 2130 BALDER FM 2197 SELE FM Side 4 av 6

5 2263 LISTA FM 2327 HEIMDAL FM 2327 MEILE MBR (INFORMAL) 2400 LISTA FM 2522 SHETLAND GP 2522 EKOFISK FM 2560 TOR FM 2727 CROMER KNOLL GP 2747 VIKING GP 2747 DRAUPNE FM 2918 HEATHER FM 2953 VESTLAND GP 2953 SLEIPNER FM 3083 NO GROUP DEFINED 3083 SKAGERRAK FM Spleisede logger navn format størrelse [KB] 4928 pdf 0.47 Geokjemisk informasjon navn format størrelse [KB] 4928_1 pdf _2 pdf 0.53 Logger Type logg Topp dyp Bunn dyp for for logg logg GR HDIL CDL CN XMAC LWD - GR MPR LWD - MPR ORD CCN APX MREX RCI PRESSURE RCI PRESSURE SAMPLE STRADDLE PACKER SWC Side 5 av 6

6 SWC VSP Foringinsrør og formasjonsstyrketester Type utforing Utforing diam. [tommer] Utforing dybde Brønnbane diam. [tommer] Brønnbane dyp Slam egenvekt ekvivalent [g/cm3] Type formasjonstest CONDUCTOR LOT SURF.COND. 13 3/ / LOT INTERM. 9 5/ / LOT OPEN HOLE / LOT Boreslam Dybde Egenvekt, Viskositet, Flytegrense Type slam MD slam [g/cm3] slam [mpa.s] [Pa] WBM WBM WBM NAF NAF NAF NAF NAF Dato, måling Side 6 av 6